. >>> nsa supporters in congress are expressing outrage over allegations that the agency is spying on america's closest allies. >>> reporter: senate intelligence committee chairwoman diane feinstein expressed outrage over allegations that the u.s. spies on allies. she issued a statement saying i am totally opposed. the white house says it's reviewing the program that monitored the foreign leaders but feinstein and her senate colleagues want to go one step further. she is calling for a review of all intelligence operations. >> these revelations call for a thorough review of the collection standards that we are using. senator feinstein said her committee was unaware the u.s. was listening in on phone calls from friendly heads of state. senator john mccain wants to know who did know. >> we want to know what the president knew and when he knew it. >> reporter: the white house won't say if he knew about the merkle eavesdropping but admits damage has been done. >> we are mindful that these disclosures have caused tension in our relationships. elmar brock is part of a delegation urging the u